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Takahisa Kakudou is a robotics researcher whose work focuses on autonomous cleaning robots capable of navigating three-dimensional human environments, particularly stairs. His major contributions center on developing mobile mechanisms that enable robots to clean and move across all floors of a building, including staircases—a significant challenge in robotics. Kakudou designed a translational locomotion mechanism that allows a cleaning robot to ascend, descend, and turn on stairs, addressing the limitations of conventional floor-cleaning robots confined to flat surfaces. His most cited paper, "Study on mobile mechanism for a stair cleaning robot" (2011, 12 citations), introduces this autonomous system, while subsequent works (2012, 8 and 5 citations) refine the turning motion and climbing capabilities. Though his citation counts are modest, his research is foundational for service robotics in high-rise buildings, where cleaning tasks require three-dimensional mobility. Kakudou’s work has practical implications for automating maintenance in complex indoor spaces, and his simulation studies (2010, 3 citations) provide a framework for testing stair movement. His contributions are notable for addressing a niche but critical problem in robotics: enabling robots to operate seamlessly across both flat and inclined surfaces in human habitats.